![]() ![]() Firstly, 3D model of mountain bike frame structure has been draw using computer-aided design (CAD) software and normal mode analysis using MSC Nastran Patran was executed for numerical method meanwhile modal testing using impact hammer was performed for experimental counterpart. The correlation between two studies will be obtained using percentage error. The main objectives of dynamic study are to find the modal properties using two method finite element analysis (FEA) and experimental modal analysis (EMA). This paper focusing on dynamic study for bicycle frame structure with a purpose to avoid the problem regarding loads on the structure and to ensure the structure is safe when multiple loads are applied on it. The prototype of the frame has been succesfully casted by sand casting method.īicycle frames have to bear variety of loads and it is needed to ensure the frame can withstand dynamic loads to move. The optimization of the design reduces to a light and strong frame. Initilly, the bicycle is relatively heavy (7 kg). Prototypes have been produced and the first bike is in the testing phase. To achieve these objectives, it is necessary to redesign the bicycle frame suitable for the casting process. Production of bicycle frames in limited quantities is possible by using the casting process. This study is aimed to examine the use of casting technology in the manufacturing process of bicycle frame. In order to reduce the dependence on raw materials and pipe welding processes, an alternative technology for bicycle frame manufacturing process is investigated. Bicycles are made by big companies, because it requires forming technology of raw materials for the pipe production and complex welding technologies. Bicycle frames on the market are generally made from a pipe connected by welding process. ![]()
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